OFPST_PORT_DESC reply (xid=0x2):
 1(vlan20): addr:52:34:96:4e:00:ec
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(vlan21): addr:7a:7e:6f:78:f6:85
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(vlan22): addr:2e:76:3c:42:4d:19
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 4(eth1): addr:fa:16:3e:b3:18:41
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-ex): addr:fa:16:3e:b3:18:41
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
